In Hungary, roughly 1,5 million tons of sewage sludge is produced each year. This yearly quantity shows a steady increase since year 2000, which is not expected to change in the near future. Due to stricter and stricter environmental regulations, trends in the European Union (EU) show that the share of sewage sludge combustion among other disposal methods, such as dumping or agricultural use is increasing each year, therefore, as an alternative of utilization, co­combustion...